How to Change the Oil in a 1999 Kawasaki KX500 – MotoSport.com Guide
Shop parts for a 1999 Kawasaki KX500 Dirt Bike.
Changing the oil on your 1999 Kawasaki KX500 is one of the most important maintenance tasks for ensuring long engine life and consistent performance. This guide will walk you through the process step-by-step, highlighting model-specific tips and requirements to help you get the job done right the first time.
Tools and Supplies Needed
- Socket set or wrench (to remove and install the drain bolt)
- Drain pan or suitable container (for used oil)
- Measuring cup or graduated container (to ensure the correct oil amount is added)
- Funnel (for easy pouring of new oil)
- Clean rags or shop towels (to wipe up any spills)
- Replacement transmission or 2-stroke gear oil (refer to the owner's manual for recommended viscosity and type)
- New washer for drain bolt/crush washer (recommended for proper sealing)
- Gloves (optional but helps keep hands clean and protects from hot oil)
Preparation Before You Begin
- Warm up your KX500 for a few minutes to allow the oil to thin and flow out easier. Do not let the engine get too hot.
- Shut off the engine and place the bike upright on a stand or level surface.
Step-by-Step Oil Change Instructions
-
Locate the Drain Plug:
- On the 1999 KX500, the drain plug is located on the bottom of the engine case. Consult your service manual if needed for identification.
-
Place the Drain Pan:
- Position the drain pan directly under the drain plug to catch all the used oil.
-
Remove the Drain Plug:
- Carefully remove the drain bolt using the appropriately sized socket or wrench. Allow all the oil to fully drain out – it may take a few minutes.
- Inspect the old oil for any metal shavings or debris; a few tiny specks are normal, but large pieces can indicate internal wear.
-
Replace the Crush Washer:
- It’s recommended to replace the old crush washer with a new one each time you change the oil to prevent leaks.
-
Reinstall the Drain Plug:
- Install the drain plug back into the case and hand-tighten. Then use the wrench to tighten it snugly, but take care not to over-torque. Stripping the threads in the case is a costly mistake.
-
Add New Oil:
- Using a funnel, pour the recommended amount of fresh gear oil into the fill hole. For the KX500, always verify the correct oil capacity in your factory service manual, but most models require approximately 700ml of transmission oil.
- Poor too much oil can cause leaks or clutch problems, while too little risks damaging internal gears.
- Make sure to use high-quality two-stroke transmission or gear oil as specified for your model.
-
Check Oil Level:
- With the bike upright (not on the side stand), check the oil level at the inspection bolt or window (if equipped). The level should be flush with the lower edge of the check hole when the bike is level.
- Add or subtract oil as needed until it reaches the correct level.
-
Reinstall Filler Cap:
- Install and tighten the filler cap securely.
-
Wipe Down the Area:
- Wipe away any oil drips or spills around the engine and on the frame.
-
Test Ride and Recheck:
- Start the bike and let it idle for a couple of minutes. Shut it off and check for oil leaks around the drain and fill plugs. Recheck the oil level once the oil has settled, and top off if necessary.
Specific Call-Outs for the 1999 Kawasaki KX500
- Oil Type: The KX500 uses transmission/gear oil in the gearbox side. Use the exact specification recommended by Kawasaki for best clutch and gear longevity.
- Drain Plug Torque: Do not overtighten the drain plug. Stripped threads in the magnesium case are a known issue – tighten only to the factory spec (consult your service manual for exact value).
- Oil Capacity: While most KX500s require around 700ml, always cross-verify with your specific year and model to avoid overfilling or underfilling the transmission chamber.
- Frequent Changes: Aggressive riding and racing require more frequent oil changes compared to casual trail use.
- Crush Washer: Failing to install a new washer can cause perpetual leaks at the drain bolt.
Final Tips
- Dispose of used oil responsibly by taking it to a recycling center.
- Document your oil changes for future maintenance records.
- Always use manufacturer-recommended oils to ensure maximum protection for your gearbox and clutch.
By completing this oil change, you’ll help keep your Kawasaki KX500 running at its best on every ride. For more parts, supplies, or expert advice, visit MotoSport.com—your trusted partner for dirt bike maintenance.
Related Shopping Categories
Shop Motor Oil for a 1999 Kawasaki KX500 Dirt Bike.
Shop Oil Filters for a 1999 Kawasaki KX500 Dirt Bike.
Shop Oil Drain Pans for a 1999 Kawasaki KX500 Dirt Bike.
Shop Tools for a 1999 Kawasaki KX500 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 1999 Kawasaki KX500 Dirt Bike.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.